- Forums
- Product Forums
- General Purpose MicrocontrollersGeneral Purpose Microcontrollers
- i.MX Forumsi.MX Forums
- QorIQ Processing PlatformsQorIQ Processing Platforms
- Identification and SecurityIdentification and Security
- Power ManagementPower Management
- Wireless ConnectivityWireless Connectivity
- RFID / NFCRFID / NFC
- Advanced AnalogAdvanced Analog
- Neural Processing UnitsNeural Processing Units
- MCX Microcontrollers
- S32G
- S32K
- S32V
- MPC5xxx
- Other NXP Products
- S12 / MagniV Microcontrollers
- Powertrain and Electrification Analog Drivers
- Sensors
- Vybrid Processors
- Digital Signal Controllers
- 8-bit Microcontrollers
- ColdFire/68K Microcontrollers and Processors
- PowerQUICC Processors
- OSBDM and TBDML
- S32M
- S32Z/E
-
- Solution Forums
- Software Forums
- MCUXpresso Software and ToolsMCUXpresso Software and Tools
- CodeWarriorCodeWarrior
- MQX Software SolutionsMQX Software Solutions
- Model-Based Design Toolbox (MBDT)Model-Based Design Toolbox (MBDT)
- FreeMASTER
- eIQ Machine Learning Software
- Embedded Software and Tools Clinic
- S32 SDK
- S32 Design Studio
- GUI Guider
- Zephyr Project
- Voice Technology
- Application Software Packs
- Secure Provisioning SDK (SPSDK)
- Processor Expert Software
- Generative AI & LLMs
-
- Topics
- Mobile Robotics - Drones and RoversMobile Robotics - Drones and Rovers
- NXP Training ContentNXP Training Content
- University ProgramsUniversity Programs
- Rapid IoT
- NXP Designs
- SafeAssure-Community
- OSS Security & Maintenance
- Using Our Community
-
- Cloud Lab Forums
-
- Knowledge Bases
- ARM Microcontrollers
- i.MX Processors
- Identification and Security
- Model-Based Design Toolbox (MBDT)
- QorIQ Processing Platforms
- S32 Automotive Processing Platform
- Wireless Connectivity
- CodeWarrior
- MCUXpresso Suite of Software and Tools
- MQX Software Solutions
- RFID / NFC
- Advanced Analog
- Neural Processing Units
-
- NXP Tech Blogs
- Home
- :
- Translated Content
- :
- Multi Source Translation Content
- :
- 2411992_en-US
2411992_en-US
- RSS フィードを購読する
- 新着としてマーク
- 既読としてマーク
- ブックマーク
- 購読
- 印刷用ページ
- 不適切なコンテンツを報告
2411992_en-US
2411992_en-US
We use a PCA9450BHNY to supply an i.MX8 Nano.
During production testing, we measure the Voltage of Buck 1 (V_0V95_SOC) and Buck2 (V_0V85_ARM) an check the voltage Limits of 0.85V +/- 2%.
During this test, the CPU stops and the flash is unprogrammed.
Beginning in August 2026 the Voltage rises and violates the upper limit at some boards.
Not only the individual Voltages of a board rises, also the mean value of thousands of boards.
There was an PCN (202502007F01 : PCA9450 / MP90 Dual Wafer Fabrication Source Expansion
from SSMC to PSMC) last year (25.04.2025)
Can the new wafer fab a possible source of the problem?
Hello!
Thank you for your patience. I’m currently checking this internally and will get back to you as soon as I have an update.
An internal investigation revealed that the problem was caused by worn test probes contacting the test points on the printed circuit board. We replaced the test probes, and the voltages are now within the permissible range.